Automatic grain and liquid weighing scale



(No Model.)

I A 2 Sheets-Sheet I. H. A. MGL'AUGHLIN.

AUTOMATIC GRAIN AND LIQUID WEIGHING SCALES. No. 247,090.

' Patented Sept. 13,1881.

ML'AJ "Mum A WITNESSES: INVENTOIM C zazw% W I J d flw (7- WW/ MATTORNEYS.

(No Model.) 2 SI1eets-Sheet 2. 11. 11. MQLAUGHLIN. AUTOMATIO GRAIN ANDLIQUID WEIGHING SCALES. 110. 247,090. Patented Sept. 18,1881.

Luflilfp) L V;

W I ATTORNEYS.-

N1 PETERS Pholoblhcgraplmr. Wnshingmn. D. C.

UNITED STATES PATENT OFFICE.

HENRY A. MOLAUGHLIN, OF KARNS CITY, PENNSYLVANIA.

AUTOMATIC GRAIN AND LIQUID WEIGHING SCALE.

SPECIFICATION forming part of Letters Patent No. 247,090, datedSeptember 13, 1881. r Application filed June 25, 1881. (No model.)

T 0 all whom it may concern:

Be it known that I, HENRY A. MOLAUGH- LIN, of Karns City, in the countyofButler and State of Pennsylvania, have invented a new and usefulImprovement in Weighing-Scales; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the accompanying drawings, forming part of thisspecification, in which- Figure 1 is a side elevation of my improvedweighing-scales. Fig. 2 is a vertical central section. Fig. 3 is adetail view of the tripping mechanism. Fig. 4 is a detail front view ofthe upper part of the scales with the rack down.

My invention relates to improvements in devices adapted to be attachedto weighing-scales for the purpose of weighing dry or liquid substances;and it consists in the peculiar construction and arrangement of theparts, whereby a revolving wheel provided with buckets and heldstationary by spring-catches for the reception in a bucket of thematerial to be weighed is automatically dumped, as hereinafter morefully set forth.

In the accompanying drawings, the'frame A, for supporting the scales,consists of a bottom piece, a, provided with posts I) I), joinedtogether at their upper ends by a horizontal cappiece, 0, provided witha central slot, d, for the reception of the lower end of the hopper e.

h represents a rack, which is attached to the weighing-scales, ofordinary construction, in the same manner as a common scoop-rackisattached to counter-scales.

i represents a revolving bucket-wheel composed of two end disks, j,divided into four or more equal compartments or buckets by partitions70, extending from one disk to the other. The partitions 70 may be madeof brass, sheetiron, or galvanized sheet-iron, or other suitablematerial.

lrepresents the horizontal axle of the revolving bucket-wheel, securedthereto and extending through the center of the bucketwheel, and havingits bearing in the rack h.

m m represent two parallel vertical posts secured to the side faces ofthe rackh and lying opposite each other.

To the upper end of each of the posts m are pivotally secured arms a,each pressed down by a spring, a, and provided with catches 0,projecting downwardly near their inner ends, and adapted to engage withnotches 19, made in the peripheries of the disks. Theinner ends of thearms a are connected together byatra'nsverse bar, q, the ends of whichproject out on each side beyond the disks, for a purpose hereinafterdescribed, The notchesp in the disks j lie opposite each other, andthere are two opposite notches for each bucket. By this construction itwill be seen that the sprin g-catches hold the bucket-wheel by enteringthe notches until the spring-catches are released therefrom.

To the sides of the rack hare secured two opposite vertical posts, 1 r,joined together at their upper ends by the cap-piece s,.to the middle ofwhich are secured the vertical lugs t t, in which the axle of the wheelu is journ'aled, which wheel a, when the rack and bucket-wheel are up,and the latter receiving from the hopper the material to be weighed,bears against the lower face of the arm n of the delivery-spout w,journaled in lugs to, de pending from the lower face of the cap-piece o.The delivery-spout w is arranged directly under the discharge-spout ofthe hopper c,

and the outer end of the projecting arm 12 of the delivery-spout isprovided with aweight, x, which overbalances the weight of thedelivery-spout and throws the delivery-spout up into a horizontalposition, or nearly so, when the bucket-wheel and rack sink, so that nomaterial will be discharged into the bucketwheel, the play or vibrationof the deliveryspout'upward being limited by stops on the sides of thedelivery-spout abutting against the lugs 20, in which the delivery-spoutis journaled.

3 represents a spring secured at one end to the upper face of the arm nof the deliveryspout, the opposite end of said spring bearing againstthe lower face of the cap-piece 0, the tension of the spring beingexerted to throw the arm n downward.

2 represents a horizontal shaft journaled in the posts I) 1) near theirupper ends, and provided at one end with a wheel or crank, c, to whichpower may be applied by hand or by a belt driven by steam or otherpower. The.

horizontal shaft 2 is provided near each end with a cam, b, and near itsmiddle, opposite the delivery-spout, with a scoop or scraper, c.

d d represent hammers pivoted to the inner faces of the posts I) b,opposite each other and opposite the spring-catches 0.

e 0' represent recessed brackets secured to the inner faces of the postsI), in the recesses of which the hammers d are adapted to oscillate whenpressed downward by the cams on the shaft .2, the hammers d (1 beingforced upward when the cams are released from the hammers in therevolution of the shaft a by springs h h, each bearing at one end in thebottom of the recess in the bracket, passing thence around a pin securedto the inner face of each post I), and the opposite end of the springbearing against the lower face of the hammer. Stops are secured to theinner faces of the posts I) 1), near the hammers, to limit their upwardplay. By this construction the hammers have a constantly upward strikingmotion imparted to them, caused by the revolution of the cam-shaft andthe action of the springs, as described.

The operation of the machine is as follows: The slide on the scale-beamis moved out to the desired weight to be obtained, when'the outer end ofthe scale-beam will descend, and the rack and bucket-wheel will ascend,the wheel a on the cap-piece of the vertical posts secured to the rackbearing against the under face of the delivery-spout and causing thelatter to stand in an inclined position to receive from the hopper thematerial to be weighed. The delivery-spout conducts the material fromthe hopper into one ot'the buckets ofthe wheel, the latter beingprevented from turning by the spring-catches engaging with the notchesof the receiving bucket -wheel. \Vhen the de sired quantity hasalmostpassed into the bucket-wheel the weight of the material in thebucket, the downward pressure of the spring exerted on the upper face ofthe arm ot'the delivery-spout, and the weight at the end of the arm ofthe delivery spout will cause the bucket-wheel and rack to sink downward somewhat, and the wheel a no longer hearing against the arm of thedelivery-spout, the latter will assume a horizontal position,or nearlyso, so that the material to be weighed will not run out or pass from thedelivery-spout to the bucket-wheel. Power is then applied to the wheel aat the endof the cam-shaft, and at each revolution of the cam-shaft thescraper or scoop at its middle carries small quantities of the materialinto the bucket-wheel until the correct weight is obtained, when therack and bucket will further descend, and the projecting ends of thetransverse bar connecting the inner end of the spring catches will bestruck by the hammers in their upward movement and released fromengagement with their notches, causing the bucketwheel to rotate fromthe weight of the material and automatically dump its contents into aspout, n, in the lower end of the rack and under the bucket. Thebucket-wheel will revolve until arrested by the spring-catches enteringthe next notches in the rims or disks of the bucketwheel. Secured to oneend of the axle of the bucket- Wheel is a pinion, which meshes with alarger cogwh eel placed under the dial m and attached to the rack. Theaction of the bucket in discharging or emptying its contents rotates thegears and a dial-indicator, 0.

That I claim as my invention is-- 1. The combination, withweighing-scales carrying the rack and notched revolving bucket-wheelLjournaled in said rack, posts I) 11, carrying slotted cap-piece c, andhopper e, of the springcatches a 0, vertical posts 1' 1', provided witha cap-piece, s, carryinga wheel, a, and pivoted delivery-spout 10,whereby the material to be weighed is fed into a bucket of the wheelheld stationary, substantially as described.

2. The combination, with the revolving bucket-wheel i and pivoteddelivery-spout w, provided with the arm 2;, having acounterbalanceweight on its outer end, and spring y, of the sh aft 2,carrying the scraper c, substantially as described, and for the purposeset forth.

3. The combination, with the notched bucket-wheel z and spring-catchesn0, having connecting cross bar q, projecting beyond the bucket-wheel oneach side thereof, of the shaft 2, provided with cams I), pivotedhammers d, and springs h, substantially as described, and for thepurpose set forth.

at. The combination, with weighing -scales carryinga rack, h, havingspouta, and notched revolving bucket-wheel 'i, of the slotted cappieeec, carrying the hopper e, spring-catches n 0, connected by the cross-barq, pivoted delivery-spout to, having a counterbalance-Weight, spring y,cap-piece s, carryingthe wheel a, camshaft 2, having scraper c,pivotedhammers d, and springs h, substantially as described,and for the purposeset forth.

HENRY AUGUSTINE McllAUGHLIN.

Witnesses:

P. It. BURKE, A. H. SIMPSON.

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